ATI Damper – 7.425in – Steel LW – 6/4 Grv – LS1/LS2 – F & V Body – 3 Ring

ATI Super Damper 917242 is an engine and drive-system specific harmonic damper in the 7.425in – Steel LW – 6/4 Grv – LS1/LS2 – F & V Body – 3 Ring configuration. Confirm the crankshaft, balance requirement, hub, shell, diameter, groove arrangement, accessory drive, and every ATI application note before ordering.

Key Features

• Lightweight Steel Construction: Cuts front-end rotational weight versus OEM for quicker engine revving and sharper throttle response.
• Lightweight steel shell weighs 11.8 lbs lighter than cast OEM for reduced inertia.
• SFI 18.1 Certification: Meets racing safety standards for drag strip and circle track with durability under extreme loads.
• Bolts directly to LS crankshaft with M16x2.0 center bolt torque to 240 ft-lbs.
• Machined in USA from billet steel with O-ring sealed elastomer for zero slippage.
• SFI stamp on unit required for sanctioned racing events.

Fitment

Specifications

What’s Included

One new ATI component identified by manufacturer part number 917242. Hubs, pulleys, belts, bolts, washers, spacers, keys, tools, and installation hardware are included only when expressly stated for this exact part number.

About ATI Performance Products

ATI develops tunable and serviceable Super Dampers, crank hubs, pulleys, transmission components, and engine service hardware for performance and competition applications. Compatibility remains exact-part and engine-system specific.

Related ATI Components

• ATI Damper – 7.425in – Steel LW – 6/4 Grv – LS1/LS2 – F & V Body – 6 Bolt – 3 Ring
• ATI Damper – 7.48in – Alum LW – 6 Grv – LS1/LS2 – F & V Body – No A/C – 3 Ring
• ATI Damper – 6.78in – Alum – 6/4 Grv – 10 Percent UD – LS1/LS2 – F & V Body – 10 Per UD A/C – 3 Ring

Browse the ATI collection for additional dampers, pulleys, and service components.

Frequently Asked Questions

Does ATI 917242 match my engine and accessory drive?
Match the engine family, crank snout and keyway, balance type, hub, outside diameter, belt grooves, accessory drive, and every application note. The stated configuration is 7.425in – Steel LW – 6/4 Grv – LS1/LS2 – F & V Body – 3 Ring.

Is this ATI Super Damper rebuildable?
ATI Super Dampers are serviceable. Inspect the shell, hub, fasteners, timing marks, and elastomers according to the current ATI instructions and service intervals.

Do I need a special installer for this damper?
Use the correct crankshaft damper installation tool and the exact fastener, washer, spacer, key, hub, and torque procedure for the engine. Never hammer the damper onto the crankshaft.

Installation Instructions

Use the current ATI instructions and the engine manufacturer’s service information. Verify crankshaft and hub condition, key and spacer placement, required installer, fastener and washer, runout, pulley alignment, belt routing, clearances, and final torque. Never draw the damper on with an undersized or partially engaged bolt.